Operating device for poppet valves



March 19, 1929. E, R, TAYLOR 1,706,263

OPERATING DEVICE FOR POPPET VALVES Filed Aug. 11. 1927 Patented Mar. 19, 1929.

PATENT OFFICE.

ERNEST R. TAYLOR, 0F ARKANSAS CITY, KANSAS.

OPERATING DEVICE FOR POPPET VALVES.

Application led August 11, V1927. Serial No. 212,268.l

The invention relates to the valve operating mechanism of internal combustion engines and has for its object the provision of improved means for adjusting the valve, comprising providing the valve stem with a threaded extremity on which is engaged a contact member for the valve tappet that consists of a disk raving a circula-r projectionon its under side forming a shoulder to engage and seat one end of the valve spring and a threaded nipple to engage the threaded extremity of the valve stem, the upper side of the disk being provided with a lug or projection arranged axially ofthe nipple to sustain the thrust of the tappet mechanism.

The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawings, in which Figure l is a side view'in elevation of the upper fragment of an engine cylinder and cylinder head showing the valve operating` mechanism with Jthe improved contact member in position on the valve stein,

Figure 2 is a transverse sectional view on a plane substantially through the axis of the valve stem, the valve stem being shown in eleva-tion,

Figure 3 is a side view of the Contact member. and

Figure l is a top plan View or" the Contact mem er.

In the drawings similar reference characters are used to indicate corresponding parts throughout the several views.

The improved operating mechanism for poppet valves is shown in Figures l and 2 applied to an engine cylinder A havingcylinder head B, w'th inlet or exhaust port C controlled by a valve D havingl a stem E, Said valve being operated by a tappet F actuated by a push rod (l. lt will be understood that the type ot valve operating mechanism used for illustration is not a part ot the invention, and that any .other type of Valve operating mechanism may -be substituted therefor, the invention relatingto means hereinafter described to sustain the thrust of the valve spring H and the impact of the valve actuating means or tappet F. The contact mem ber comprises a disk l having a circular proj ection 2 on its under side forming a shoulder 3, said projection 2 being adapted to be received within one end oit the spring ll. An internally threaded nipple 4l is provided that is smaller in diameter than the circular projection 2, said nipple being adapted to engage threaded end 5 of the valve stein E, and the disk l is provided with a plurality of radial notches 6 to be engaged by a spanner wrench (not shown) to adjust the contact member on the valve stem. As shown, nipple 4 is spaced from the coils (if-spring H to obviate drag of said spring on the nipple. 7 designates a jamb mit engaging the end ot the nipple 4 to limit the screwing action of the nipple l onto the stem E. On the upper side of the disk l is a lug or projection 8 that is arranged axially of the nipple e and is designed to receive the impact of the valve actuating mechanism such as the tappet F in the type of mechanism illustrated in the drawing.

`What is claimed is 1. In a poppet valve, a valve having a stem.

the free end of said stem threaded, a contact member including a disk, an internally threaded nipple on said disk engaging the threads on the stem, a circular projection on the disk of less diameter than the disk and surrounding the nipple aforesaid, said projection forming a shoulder to be received within a valve spring and to space it from said nipple, and a lug on the disk axially alined with the nipple for engagement with an operating member.

2. ln a poppet valve, a valve having a stem, the free end of said stem threaded, contact member including a disk. a circular projection on one side oit' said disk of less diameter than the disk forming a shoulder adapted to be received within one end ot' a valve spring, an internally threaded nipple on said projection engaging the threads on the stem, said .nipple being smaller in diameter than thc circular projection aforesaid and spaced from said valve spring, a lug` on the other side ot the disk axially alined with the nipple lor engagement with an operating member, and the disltprovided with radial notches cutting its periphery for engagement by a spanner Wrench to adjust the position of the contact member on the valve stem.

In testimony whereof I ah'ix my signature.

ERNEST R. TAYLOR. 

